#!/usr/bin/env bash
set -euo pipefail

TARGET_PROJECT="propane-will-491900-m5"
REPO_ROOT="${REPO_ROOT:-$HOME/OSVauco}"
GITEA_SERVICE="${GITEA_SERVICE:-gitea}"

GREEN="\033[0;32m"
RED="\033[0;31m"
YELLOW="\033[1;33m"
NC="\033[0m"

check() {
  local label="$1"
  local cmd="$2"
  echo -n "$label: "
  if eval "$cmd" >/dev/null 2>&1; then
    echo -e "${GREEN}OK${NC}"
  else
    echo -e "${RED}FAIL${NC}"
    return 1
  fi
}

warn() {
  local label="$1"
  local cmd="$2"
  local msg="$3"
  echo -n "$label: "
  if eval "$cmd" >/dev/null 2>&1; then
    echo -e "${GREEN}OK${NC}"
  else
    echo -e "${YELLOW}WARN${NC} - $msg"
  fi
}

echo "=== PREFLIGHT: $(hostname) ==="
echo "User:          $USER"
echo "Home:          $HOME"
echo "Repo root:     $REPO_ROOT"
echo "Target project:$TARGET_PROJECT"
echo "Gitea service: $GITEA_SERVICE"
echo

check "Repo exists"                 "[ -d \"$REPO_ROOT\" ]"
check "gcloud auth active"          "gcloud auth list --filter=status:ACTIVE --format='value(account)' | grep -q ."
check "ADC token (metadata)"        "gcloud auth application-default print-access-token >/dev/null 2>&1"
check "gcloud config project"       "[ \"\$(gcloud config get-value project 2>/dev/null)\" = \"$TARGET_PROJECT\" ]"
check "Shell GOOGLE_CLOUD_PROJECT"  "[ \"\${GOOGLE_CLOUD_PROJECT:-}\" = \"$TARGET_PROJECT\" ]"
warn  "Systemd manager env"         "systemctl show-environment | grep -q \"GOOGLE_CLOUD_PROJECT=$TARGET_PROJECT\"" "not in manager env (unit overrides may still work)"

if [ -f "$REPO_ROOT/.env" ]; then
  echo -e "Env file: ${GREEN}OK${NC} - using .env"
elif [ -f "$REPO_ROOT/.env.prefilled" ]; then
  echo -e "Env file: ${YELLOW}WARN${NC} - .env missing, but .env.prefilled exists"
elif [ -f "$REPO_ROOT/.env.example" ]; then
  echo -e "Env file: ${YELLOW}WARN${NC} - only .env.example exists"
else
  echo -e "Env file: ${RED}FAIL${NC} - no .env, .env.prefilled, or .env.example found"
  exit 1
fi

warn  "Git clean"                   "git -C \"$REPO_ROOT\" diff --quiet && git -C \"$REPO_ROOT\" diff --cached --quiet" "working tree has local changes"
check "Gitea service active"        "systemctl is-active --quiet \"$GITEA_SERVICE\""
check "Gemini CLI in PATH"          "command -v gemini >/dev/null 2>&1"

echo
echo "Preflight complete."